Original Part
Alternative Part
1. LM358ST Substitution Conclusion
In most general-purpose, low-frequency, low-power applications, the LM358ST can serve as a substitute for the original part number, provided the limitations arising from its key performance downgrades are acknowledged. The primary differences include: a significantly reduced gain bandwidth product (800 kHz vs. 10 MHz) and slew rate (0.6V/µs vs. 4V/µs), rendering the LM358ST unsuitable for processing high-frequency signals or fast transient responses. It is only applicable for DC or low-speed amplification circuits. Its notably higher input offset voltage (2 mV vs. 500 µV) degrades DC accuracy, making it unfit for precision amplification or sensor signal conditioning. However, its lower quiescent current (700µA vs. 4mA) is advantageous for low-power designs. Furthermore, it is AEC-Q100 automotive-grade qualified, making it suitable for vehicular environments. Substitution is viable if the application has low requirements for bandwidth, speed, and precision, while prioritizing low power consumption or automotive reliability.
2. LM2904YST Substitution Conclusion
The parameters of the LM2904YST are highly similar to those of the LM358ST, leading to a largely identical substitution conclusion, though minor detail differences warrant attention. Its gain bandwidth product (700 kHz) and slew rate (0.6V/µs) are similarly far lower than the original part's, restricting high-frequency applications. The input offset voltage (2 mV) is comparably poor, impacting precision amplification. Its output current (30 mA vs. 25 mA) is slightly higher, though the practical drive capability difference is negligible. The advantages of low quiescent current (700µA) and automotive-grade qualification are the same as the LM358ST. The core distinction is that the LM2904YST is specified for "single-ended output," while the original part does not explicitly state this, though the practical impact is minimal. Substitution is only recommended for low-frequency, low-precision, low-power, or automotive electronic scenarios. It is entirely unsuitable for high-speed or high-precision applications.
Analysis ID: 827D-DFAB000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com